Caution: NOT registered for VAT

I've purchased a DJI Mavic 2 Pro combo from Drone Gear on 21 Oct 2021. Afterwards I've asked Jody to just send me an Invoice because I'm purchasing the Drone for my Business & want to claim back VAT. She told me they aren't registered for VAT - which is fine but in that case I only need a copy of her ID to send to SARS to say Dronegear isn't registered for VAT & I will still be able to claim back the VAT. It's a few months later & she just ignore my messages - if I knew this would have been the case, then I would not have bought the Drone from them in the first place.